1222022122001 has 4 divisors (see below), whose sum is σ = 1242055271604. Its totient is φ = 1201988972400.

The previous prime is 1222022121997. The next prime is 1222022122039. The reversal of 1222022122001 is 1002212202221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15207822400 + 1206814299601 = 123320^2 + 1098551^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222022122001 - 2² = 1222022121997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1222022122801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10016574710 + ... + 10016574831.

It is an arithmetic number, because the mean of its divisors is an integer number (310513817901).

Almost surely, 2^{1222022122001} is an apocalyptic number.

It is an amenable number.

1222022122001 is a deficient number, since it is larger than the sum of its proper divisors (20033149603).

1222022122001 is an equidigital number, since it uses as much as digits as its factorization.

1222022122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20033149602.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1222022122001 its reverse (1002212202221), we get a palindrome (2224234324222).

The spelling of 1222022122001 in words is "one trillion, two hundred twenty-two billion, twenty-two million, one hundred twenty-two thousand, one".